SUGAR, MOLASSES, CONFECTIONS, AND HONEY. 717 



The sugar plantations in Louisiana usually have a special name, and! 

 the sirups and sugars coming therefrom bear the name of the planta- 

 tion. The names of many of these plantations will be found in the; 

 description of samples. 



ANALYSES BY SHIPPEN WALLACE. 



A general description of the samples will be found in Mr. Wallace's- 

 letter of transmittal. It is a matter of regret that a fuller description 

 of the samples was not furnished. The failure to detect tin in any of 

 the samples suggests the remark that much depends on the delicacy of 

 the tests applied. In the samples, for instance, examined in the De- 

 partment laboratory, a trace of copper or tin was found in almost every 

 instance, but in such minute quantities as to have easily escaped any 

 quantitative determinations. 



Of the whole number 31 were adulterated with glucose, being 62 per 

 cent. 



No samples of maple molasses were purchased. In the number of 

 adulterated samples the contrast between Boston and Philadelphia is- 

 quite striking. 



ANALYSES BY H. A. WEBER. 



Of the whole number of samples 23 contained glucose. These are 

 indicated in the table of analyses by the percentage of dextrin which 

 they contain. No molasses made from sugar cane would contain more 

 than a trace of dextrin. 



There are 15 samples of New Orleans molasses, only 4 of which are 

 adulterated with glucose. 



In 15 samples of maple sirup are found 4 adulterated with glucose. 



Twenty-six of the samples were found to contain tin, and in most 

 cases a quantitative determination of it was made. The detection of 

 small quantities of metallic oxides in the ash of molasses by Mr. Weber 

 quite corroborates our own experience. 



ANALYSES BY F. G. WIECHMANN. 



Of the 50 samples of molasses and sirups analyzed, 20 consist of or 

 unquestionably contain starch sirup (glucose), viz, Nos. 53, 54, 55, 56, 58, 

 50, 61, 62, 66, 69, 71, 77, 78, 79, 82, 86, 88, 92, 99, and 100; that is to 

 say, 40 per cent of the samples analyzed are adulterated with glucose. 



Tin was found in 18 of the 50 samples ; in Nos. 52, 56, 57, 58, 61, 64, 

 72, 75, 78, 80, 84, 85, 86, 89, 92, 96, 99, and 100. This corresponds to 

 36 per cent. 



Samples Nos. 51, 69, 75, 96, and 97 give a purple-red color on addi- 

 tion of concentrated hydrochloric acid. This color is turned into a green 

 on adding ammonia to alkalinity. 



With basic acetate of lead the precipitate obtained is of a " Nile- 

 green " color. 



